I see thanks

@vlaaad I am using lein and jdk8 and would that be fine? I also got java11 installed but am not using it

It's better to use Java 11 — javafx is stabler there. I would suggest using Clojure's official tools-deps — not as easy to start as with leiningen, but simple, performant and easier to manage in the long run

But Java 8 with leiningen are fine on their own :)